<!DOCTYPE html>
<html xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Vue.js 搜索页面</title>
    <script src="../../js/vue.js"></script>

  <style>
    /* 隐藏未编译的变量 */

    [v-cloak] {
      display: none;
    }

    *{
      margin:0;
      padding:0;
    }

    body{
      font:15px/1.3 'Open Sans', sans-serif;
      color: #5e5b64;
      text-align:center;
    }

    a, a:visited {
      outline:none;
      color:#389dc1;
    }

    a:hover{
      text-decoration:none;
    }

    section, footer, header, aside, nav{
      display: block;
    }


    /*-------------------------
        搜索输入框
    --------------------------*/

    .bar{
      background-color:#5c9bb7;

      background-image:-webkit-linear-gradient(top, #5c9bb7, #5392ad);
      background-image:-moz-linear-gradient(top, #5c9bb7, #5392ad);
      background-image:linear-gradient(top, #5c9bb7, #5392ad);

      box-shadow: 0 1px 1px #ccc;
      border-radius: 2px;
      width: 400px;
      padding: 14px;
      margin: 45px auto 20px;
      position:relative;
    }

    .bar input{
      background:#fff no-repeat 13px 13px;
      background-image:url();

      border: none;
      width: 100%;
      line-height: 19px;
      padding: 11px 0;

      border-radius: 2px;
      box-shadow: 0 2px 8px #c4c4c4 inset;
      text-align: left;
      font-size: 14px;
      font-family: inherit;
      color: #738289;
      font-weight: bold;
      outline: none;
      text-indent: 40px;
    }

    ul{
      list-style: none;
      width: 428px;
      margin: 0 auto;
      text-align: left;
    }

    ul li{
      border-bottom: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;
    }

    ul li img{
      width:60px;
      height:60px;
      float:left;
      border:none;
    }

    ul li p{
      margin-left: 75px;
      font-weight: bold;
      padding-top: 12px;
      color:#6e7a7f;
    }
  </style>

</head>
<body>

<form id="main" v-cloak>

  <div class="bar">
    <!-- searchString 模型与文本域创建绑定 -->
    <input type="text" v-model="searchString" placeholder="输入搜索内容" />
  </div>

  <ul>
    <!-- 循环输出数据 -->
    <li v-for="article in filteredArticles">
      <a v-bind:href="article.url"><img v-bind:src="article.image" /></a>
      <p>{{article.title}}</p>
    </li>
  </ul>

</form>
<script>

  var demo = new Vue({
    el: '#main',
    data: {
      searchString: "",

      // 数据模型，实际环境你可以根据 Ajax 来获取

      articles: [
        {
          "title": "What You Need To Know About CSS Variables",
          "url": "https://www.runoob.com/css/css-tutorial.html",
          "image": "https://static.runoob.com/images/icon/css.png"
        },
        {
          "title": "Freebie: 4 Great Looking Pricing Tables",
          "url": "https://www.runoob.com/html/html-tutorial.html",
          "image": "https://static.runoob.com/images/icon/html.png"
        },
        {
          "title": "20 Interesting JavaScript and CSS Libraries for February 2016",
          "url": "https://www.runoob.com/css3/css3-tutorial.html",
          "image": "https://static.runoob.com/images/icon/css3.png"
        },
        {
          "title": "Quick Tip: The Easiest Way To Make Responsive Headers",
          "url": "https://www.runoob.com/css3/css3-tutorial.html",
          "image": "https://static.runoob.com/images/icon/css3.png"
        },
        {
          "title": "Learn SQL In 20 Minutes",
          "url": "https://www.runoob.com/sql/sql-tutorial.html",
          "image": "https://static.runoob.com/images/icon/sql.png"
        },
        {
          "title": "Creating Your First Desktop App With HTML, JS and Electron",
          "url": "https://www.runoob.com/js/js-tutorial.html",
          "image": "https://static.runoob.com/images/icon/html.png"
        }
      ]
    },
    computed: {
      // 计算数学，匹配搜索
      filteredArticles: function () {
        var articles_array = this.articles,
          searchString = this.searchString;

        if(!searchString){
          return articles_array;
        }

        searchString = searchString.trim().toLowerCase();

        articles_array = articles_array.filter(function(item){
          if(item.title.toLowerCase().indexOf(searchString) !== -1){
            return item;
          }
        })

        // 返回过来后的数组
        return articles_array;;
      }
    }
  });
</script>
</body>
</html>
